Topics:
Animal Nutrition, Animal Refresher
Estimation Factors for Protein and Energy
Match the estimation factor with its corresponding nutrient or feed component:
| Column A | Column B |
|---|---|
| 1. Protein estimation of milk | (a) 1.25 |
| 2. Protein estimation of feed stuff | (b) 2.25 |
| 3. Energy estimation (TDN) of fat | (c) 6.25 |
| 4. Gross energy correction of protein | (d) 5.30 |
| 5. Protein estimation of cotton seed | (e) 6.38 |
- 1-e, 2-c, 3-b, 4-a, 5-d — Correct Answer
- 1-c, 2-e, 3-b, 4-a, 5-d
- 1-e, 2-d, 3-b, 4-c, 5-a
- 1-d, 2-c, 3-b, 4-a, 5-e
Explanation:
Correct Answer: 1-e, 2-c, 3-b, 4-a, 5-d
Multiplication factors used in nutritional analysis:
- Protein of milk → 6.38 (e): Milk protein contains 15.67% N, so factor = 100/15.67 = 6.38. (Different from general 6.25 because casein has different N content.)
- Protein of feedstuffs → 6.25 (c): Standard CP factor. Assumes all protein contains 16% N. Factor = 100/16 = 6.25. (CP = N% × 6.25)
- TDN energy estimation of fat → 2.25 (b): Fat has 2.25 times more energy than carbohydrate. Used in TDN formula: TDN = DCP + DCF + DNFE + (DEE × 2.25).
- Gross energy of protein → 1.25 (a): Urinary energy correction for protein = 1.25 kcal/g (deducted from protein GE of 5.65 to get PFV of 4.4 kcal/g).
- Protein of cottonseed → 5.30 (d): Cottonseed proteins contain higher N (approximately 18.9% N), so the factor = 100/18.9 ≈ 5.30.
📚 About this Topic — Animal Nutrition
This multiple choice question is from Animal Nutrition, Animal Refresher. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Nutrition to strengthen your preparation.
